Adolf mack



(No Medal.)

MACK.

BOARD OF COMPOSITE MATERIAL.

8 A Q QQQ 3 v 1, m. w ,TMUII/ Patentefi July 10, 1888.

iinrrso STATES .FATENT thrice.

ADOLF MACK, or LUDWIGSBURG, wiirnrnnnnnu, o'ninmsv.

BOARD OF COMPOS lTE. MATERIAL.

SPECIFICATION forming part of Letters Patent No. 386,102, dated July 10, 1888.

Application filed November 2!), 1887. Serial No. 356,425.

(No model.) Patented in Belgium December-'11, 18st, No. 75.709, and

October 15, 1887, No. 78,065; in England Decemherili. 1886, No. 17,130; in Austria-Hungary April i2, 185?, No. 137; in holy February 4, iSPE', No. 22.734, and May 1, 1888, No. 23,156, and in France February 20, 1898, No. 197,347.

I 0 a ZZ whom it may concern:

Be it known that I, ADOLF MACK, a subject of the King of \Viirtcmberg, residing at Ludwigsburg, W ii rtemberg, Germany, have invented certain ncw and useful Improvements in Boards of Composite Material for Ceilings, \Valls, and other Building Purposes, (which invention has been patented tome in Belgium by Letters PatcntNo. 75,709, dated December 31, 1856,:tnd in Austria-Hungary,No. 37, dated April 12,1887;) and I do hereby declare that the following is a full, clear, and exact specification.

My invention relates to boards, slabs, or

. plates, chietiy applicable to the usual building purposes of wall and ceiling linings or coverings, and also as a lining for ice-chests, tines,

- and the like. Each board or plate is chiefly composed of thet'ollowing materials:

First. A large numberof small tubes, either specially made of paper or othersuitable material or formed of vegetable stalks. These tubes are uniformly distributed, so as to form a number of cores for the semi-liquid mass which is subsequently cast in.

Second. A plastic muss consisting of plastic mineral matter-such as burntgypsum, cement, or limeand finely-divided solid phrticles of organic originsuch assmallcoke, wool, hair, or t'eathers--with or without'the addition of a liquid binding substance, such as glue-water;

or a mixture of water with alum, green vitriol, and soluble glass. I do not limit myself to any special proportion between the substances composing the plastic muss; but I prefer to use them ill the following relative quantities: gypsum, cement, or lime, fifty parts; small coke, ten parts; wool; hair, or feathers, one part; binding substance consisting of alum, vitriol, and solubleglass, one part.

In the further description reference will be made to the annexed drawings, of which- Figure l is a cross'section of a, board provided with a wooden base and frame and ap- .plicable to the construction of floors as a, base or support for linoleum or asphalt, or in the construction of roofs as a base for copper, zinc, tin, slate, or tile, or as'an external lining of ice-stores, or us walls for temporary buildings. Fig. 2 is a crosssection of a. gypsum board provided with a base of prepared wood, which may, however, be replaced by tar-red felt,

plicableasa base for polished oak floorslaid on' asphalt, or for makingsouud proof floors,-und as a substitute for the usual herring-bone strutting, or as a lining for timber instead of comcut or brick-work, or for plaster ceilings by nailing the boards to the ceiling-joists, or as a lining for wooden houses, cellars, and other structures, or for making light vaults and partitions. Fig. 3 is a section of a plain gypsnn'i board as applied to the ceiling and lining of ice-chests and refrigerators. These plain gyp' sum boards, without base of wood, asphalt, or asbestos, are applicable to the construction of plaster ceilings, plaster partitions, soundproof and fire-proof floors, asalining forwalls, fines,

For making gypsum boards, as shown by Fig.

1, I take a wooden board, A,which is'covered with asphalt or asbestns, a, or coated with tar, and fix upon it a closed wooden frame, B,with nails or screws or other suitable means. The said frame consists, preferably, of four wood strips covered with indie-rubber, c, and con nected with each other so as to form a rectangular frame, the insiueb'of each strip being molded or beveled inward to form a key for the plastic mass to be cast therein. The interior of the frame B is now uniformly laid with pieces of tubes 0 approximately parallel. to each other, and the interstices are tilled up with a plastic mass or material obtained by mixing glue-water or alum, green vitriol, and

water-glass with burnt gypsum or cement or lime, and with smallcokenvool, hair, orteath' ers. After the mixture has been cast inth mold or frame 8 and brought to a uniform-sue face at the top, it may be dusted'tiritlrithe scales arising from iron t'orgings or-withgroimd cork, in order to obtain a r izghened surface.

As soon as the mass has hardened it is dried by exposure to the air. v I

The gypsum board represented by Fi 2 consists of abuse Jlutc A, rovided'on its u 7 l per side with dovetail. grooves. and rendered fire-proof either by coating or impregnating it with a suitable iirc-rcsistinggnatcriaP-ior instance,-by a coating of asbt gypsum board proper, D, which is produced in the some manner as that in Fig. 1. Instead tusand ot' the 2o dried in the open air.

of the permanent frame lshou'u in Fig. 1, I use, however, a mold which is detachable after the mass has become sulliciently hard I, 'eakjoint and make a good overlap connecto tiorTbet-ween adjoining boards.

The plain gypsum board shown in Fig. 3 is made as follows: I place "tubes or vegetable stalks in a rectangular mold composed of four wooden frames and fill the interstices with a 15 plastic mixture of gypsum, combined with small coke, wool, hair, or feathers. 'lhe surface may be roughened by dusting it with forge-scales or ground cork. After. the mass has hardened it is taken out of the mold and The drawings show a gypsum board, D', placed between two layers of wood, E.

What I claim, and desire to secure by Letters Patent of the United States, is

1. Aboard for building andin'dust'rial pur poses, consisting of plastic material and a num-. her of smallqtubes (either specially made of paper or other suitable materialor formed of vegetable stalks) embedded in the said mate 30 rial, substant ially as described.

2. Aboard consisting of lastic material,0f

a number of small tubes (either specially made 1 of paper or other suitable material or formed of vegetable stalks) embedded in the same ma- 3 5 terial, and a wooden base, substantially as described.

3. Aboard consisting of plasticmaterial and of a number of small tubes (either specially made of paper or other suitable material or I 0 formed of vegetable stalks) embedded in the said matcrial,a wooden base,and a rectangular wooden frame, substantially as described.

:4. A board consisting of a mixture of plastic mineral matter with wool, hair. or feathers, and tubes or vegetable stalks embedded in the said mixture, substantially as i'lescribed.

A board consisting of a plastic mixture of burnt gypsum with hair. wool, or feathers,

and tubes or vegetable stalks embedded in the said mixture, substantially as described.

6. A board consisting of a mixture of plustic mineral matter with fiuelydividml solid" particles of organic origin, and tubes or vegetable stalks uniformly embedded in t e said mixture, substantially as described.

' 7. A. board consisting of a mixture of plots tic mineral matter with a liquid binding substance and finely-divided solid particles ofon ganie origin, and tubes or vegetable stalks uniformly embedded in the said mixture,substantially,,as described.

8. A board consisting of a plastic mixture of burnt @gypsum with a liquid binding sub- A DOLF MACK.

Witnesses:

B. ROI, ARTHUR Mimics. 

